Title (en)

Stretched polychlorotrifluoroethylene film, process for production thereof and packaged product using the film.

Title (de)

Gestrickte Polychlorotrifluoroethylenfolie, Verfahren zu ihrer Herstellung und ihre Verwendung zur Verpackung eines Produktes.

Title (fr)

Film étiré en polychlorotrifluoroéthylène, procédé pour sa fabrication et usage du film pour l'emballage d'un produit.

Publication

EP 0684123 A3 19960207 (EN)

Application

EP 95303512 A 19950524

Priority

• JP 13390294 A 19940525
• JP 12753595 A 19950428

Abstract (en)

[origin: EP0684123A2] A stretched PCTFE (polychlorotrifluoroethylene) film is provided with a good moisture-proofness (low moisture permeability) even at a relatively small thickness and at a small crystallinity The film is characterized by a crystallinity A (%) of 15 - 75 % and a moisture permeability B (mg/m<2>.day) at a film thickness of 20 mu m, satisfying a relationship of B/(100-A) </= 3.0. The film may suitably be produced through a process characterized by a sequence of a relatively low-temperature melt-extrusion and a low temperature stretching. The film is suitably used for constituting moisture-proof packaged products, such as an EL device or a packaged drug product.

IPC 1-7

B29C 55/00; C08J 5/18

IPC 8 full level

A61J 1/00 (2006.01); A61J 1/03 (2006.01); B29C 47/00 (2006.01); B29C 55/00 (2006.01); B29C 55/02 (2006.01); B29C 71/02 (2006.01); B32B 27/30 (2006.01); B65D 65/40 (2006.01); B65D 85/38 (2006.01); B65D 85/42 (2006.01); B65D 85/86 (2006.01); C08F 14/00 (2006.01); C08F 14/24 (2006.01); C08J 5/18 (2006.01); C08L 27/06 (2006.01); C08L 27/12 (2006.01); B29K 27/12 (2006.01); B29L 7/00 (2006.01)

CPC (source: EP US)

B29C 55/005 (2013.01 - EP US); B32B 27/30 (2013.01 - EP US); C08J 5/18 (2013.01 - EP US); B29K 2027/12 (2013.01 - EP US); B29K 2995/0067 (2013.01 - EP US); C08J 2327/04 (2013.01 - EP US); C08J 2327/12 (2013.01 - EP US); Y10S 428/91 (2013.01 - EP US); Y10S 428/917 (2013.01 - EP US); Y10T 428/1334 (2015.01 - EP US); Y10T 428/1341 (2015.01 - EP US); Y10T 428/1345 (2015.01 - EP US); Y10T 428/1379 (2015.01 - EP US)

Citation (search report)

• [X] WO 9306158 A1 19930401 - ALLIED SIGNAL INC [US]
• [A] WO 9306159 A1 19930401 - ALLIED SIGNAL INC [US]
• [A] DATABASE WPI Section Ch Week 9334, Derwent World Patents Index; Class A14, AN 93-269495
• [A] DATABASE WPI Section Ch Week 9328, Derwent World Patents Index; Class A14, AN 93-223875
• [A] DATABASE WPI Section Ch Week 9243, Derwent World Patents Index; Class A14, AN 92-353378

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0684123 A2 19951129; EP 0684123 A3 19960207; JP 3672617 B2 20050720; JP H0839664 A 19960213; US 5833070 A 19981110

DOCDB simple family (application)

EP 95303512 A 19950524; JP 12753595 A 19950428; US 86745997 A 19970602